2,2'-((2-((2-((2-((4-carboxy-2-oxo-1,2-dihydroquinolin-7-yl)amino)-2-oxoethyl)(carboxymethyl)amino)ethyl)(carboxymethyl)amino)ethyl)azanediyl)diacetic acid

ethyl 7-(2-(1,4,7,10-tetraazacyclododecan-1-yl)acetamido)-2-oxo-1,2-dihydroquinoline-4-carboxylate